APA (7th ed.) Citation

Mill, R. C. (1985). The tourism system: An introductory text. Prentice-Hall.

Chicago Style (17th ed.) Citation

Mill, Robert Christie. The Tourism System: An Introductory Text. Englewood Cliffs, N.J: Prentice-Hall, 1985.

MLA (9th ed.) Citation

Mill, Robert Christie. The Tourism System: An Introductory Text. Prentice-Hall, 1985.